Mixing-machine.



'0. T. POOTE.

MIXING MACHINE.

APPLIGATION FILED P311, 1909.

1,025,907. Patented May 7, 1912.

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G. T. FOOTE.

MIXING MACHINE. QIPPLIOATION IILED PEB.1,'1909.

' 1,025,907. PatentedMayY, 1912.

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G. T. FOOTE.

MIXING MACHINE.

APPLICATION FILED $113.1, 1909.

Patented May '7, 1912.

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-12? ju/mnr UNITED STATES PATENT OFFICE.

CHESTER T. FOOTE, 0F NUNDA, NEW YORK, ASSIGNOR T0 FOOIE MANUFACTURINGCOMPANY, OF NUNDA, NEW YORK, A COPARTNERSHIP.

MIXING-MACHINE.

To all whom it may concern Be it known that I, CHEsTER T. FooTE, acitizen of the United States, residing at Nunda, in the county ofLivingston and State of New York, have invented certain new and usefulImprovements in Mixing- Machines, of which the following is aspecification.

My invention relates to improvements in mixing-machines for mixingmaterials to form concrete, and it especially relates to the mechanismfor discharging the concrete from the mixing-drum.

In mixing-machines of the type herein shown and described and known asbatchmixers, the materials are placed into the mixing-drum in batches orcharges, suit able discharging means being employed to discharge theconcrete in batches or charges, so that the mixing-drum may becontinuously kept in motion; and it is the object of my invention toprovide simple, durable and effective discharging-mechanism which can beeasily and conveniently moved from operative to inoperative position, orvice versa; and means for discharging the concrete remaining on saiddischarging mechanism after the latter is returned to its inoperativeposition.

To these ends the invention consists in the construction, arrangementand combination of parts to be hereinafter described and particularlypointed out in the subjoined claims. 7

In the drawings Figures 1 and 2 are rear elevations of a mixing-machineequipped with my improved discharging-mechanism and showing the same inits two positions. Fig. 3 is an enlarged vertical section of the same,taken in line 3-3, Fig. 1. Fig. 1 is a horizontal section on a reducedscale taken on line 44, Fig. 3, the discharge-chute being showncomplete. Fig. 5 is a perspective view of the inner portion of thedischarge-chute. Fig. 6 is a perspective view of the outer portion ofthe discharge-chute.

Referring now to the drawings in detail, like letters of reference referto like parts in the several figures.

The reference letter A designates the frame of the machine constructedin any suitable manner, but herein shown as comprising longitudinal sidebeams B supported by an axle O at their rear ends, and by a similar axleat their front ends (not Specification of Letters Patent.

Application filed February 1, 1909.

Patented May '7, 1912. Serial No. 475,453.

shown), or in any other approved manner. Traction wheels 0 are mountedon the rear axle and similar wheels will be applied to the front-axlewhen used. Secured to the beams B are supporting-bars D which are bentinto substantially V-shape with horizontal ends having supporting-wheelsE rotatable thereon.

F designates the mixing-drum consisting of two truncated cones f Whoselarger diameters are provided with outstanding flanges f through whichrivets f are passed to assure a secure and tight connection be tweensaid cones, thus forming a doublecone drum whose largest diameter iscentral. The outer or smaller ends of said cones have openings f f theopening f being a chargingopening through which the materials to bemixed are introduced and the opening f being the outlet ordischarging-opening through which the concrete is discharged from thedrum.

For .the purpose of supporting the drum so that it canrotate, it isprovided with circumferential tracks or flanges G which ride over thesupporting-wheels E, and said drum has also gear-rims H into which meshgearwheels h driven by power in any approved manner to cause said drumto rotate. Supported on the extremities of the V-shaped supporting-barsD are side plates I which lie against the ends of the drum and haveopenings 2', i registering respectively with the charging-opening f anddischargingopening f of said drum, and forming part thereof.

The materials to be mixed are introduced into the mixing-drum throughthe charging-opening in' any suitable manner, and the type of machinesherein shown, a charginghopper J is provided which 1s secured to theside plate at the charging side of the ma j projecting through thecharging opening For the purpose of mixing the materials introduced intothe drum, the latter has the tapering walls of the cone parts thereofequipped on its interior surface with mixing-blades or wings K whichtend to carry the materials to the top of the drum and drop the same tothe bottom, thus assuring a very rapid and effective mixing of thematerials.

The detail description thus far given does not relateto any portion ofmy invention,

chine and which hopper has an extension but merely describes one of manytypes of mixing-machines to which my invention can be practicallyapplied.

I will now describe my improved discharging-mechanism and its operation.This mechanism comprises essentially a chute L which is held in eitherof two positions by a suitable counter-agent. This chute when in normalor inactive position assumes a horizontal or substantially horizontalposition and is at an angle to the axis of the mixing-drum and when inits active position it assumes an inclined position in a vertical plane.These positions are obtained by reason of said chute being pivot-allysupported on a horizontal pivot-pin M fastened into the boss n of abracket N secured to the side plate on the discharge side of themachine, said boss furnishing an extended support for said pin, as bestshown in Fig. 3. I have shown a set-screw n as the means for fasteningthe pin within its bearing, but any other practicable means may beemployed for this purpose. Said pivot-pin extends out of the bracket N aconsiderable distance and mounted to swing thereon is the chute L. Thelatter comprises by preference, an inner section Z formed of sheet metaland substantially of U-shape in cross-section to provide a concaved faceor side and a convex face or side, and an outer section Z of cast metaland having the outer end of the inner member riveted or otherwisesecured to the inner end thereof, as at Z The innermember of the chuteis supported entirely by the outer member thereof, which latter ispivotally mounted on the pivot-pin M in the manner to be presentlydescribed. Said outer member comprises a chute-portion Z an integralyoke Z having an outstanding hub Z fitting loosely onto the pivot-pin Mand an integral counter-balance arm 0 having a weight P lengthwiseadjustable thereon; said arm 0 being adapted to assume positions onopposite sides of a vertical plane passing through the axis of thepivot-pin so that the chute will be maintained in its active or inactiveposition, as the case may be. For the purpose of conveniently swingingthe chute from one position to the other, it has a handle or arm R to betaken hold of by the operator.

In Figs. 1, 8 and 4 of the drawings, the chute is shown in its activeposition in which position it is inclined in a vertical plane and thecounter-balance arm 0 is inclined at a slight angle to the vertical,while in Fig. 2, also Fig. 3 and Fig. 4 in dotted lines, said chute isshown in its inactive or normal position having the counter-balancearm 0at a slight angle to the horizontal. Owing to this arrangement, forceneed only be exerted during a small portion of the movement of the chutewhen causing the latter to be returned from its active position to itsinactive or normal position, since the weighted counter-balance arm 0,immediately it is manually forced over the deadcenter, will gravitateand cause the chute to complete its movement to normal positionautomatically. In swinging the chute from inactive or normal position toactive position, however, force must be applied throughout the greaterportion of the movement of the chute or until the weightedcounter-balance arm 0 passes the dead-center, which it does as itapproaches the end of its movement. The advantage of this arrangement isthat it prevents the chute being accidentally swung into active positionand cause unintentional discharge of the concrete from the drum, owingto the fact that the counter-balance arm must be lifted during suchmovement.

The chute is held upon the pivot-pin by means of a collar S fastenedonto the outer end of said pin by a set-screw r. Said pivot-pin has itsaxis coincident with that of the drum and it so supports the chute thatthey are relatively at an angle to each other with the chute crossingthe axis of the pin. The outer end of the chute, or more particularly,the outer end of the outer section of the chute is laterally extended,as at T, and recurved, as at. t, to form a tailings-spout to dischargethe tailings or concrete remaining in the chute when the latter is beingreturned or has been returned to normal position, said spout serving todischarge the tailings or concrete at the point of discharge of thechute when in active or discharging position.

it-h the supporting pivot-pin in a horizontal plane and the chutesupported or hung thereon and at an angle thereto to cross the axisthereof, the chute assumes horizontal position when inactive, with theconcaved side facing laterally so that the materials carried upward inthe drum and caused to drop to the bottom thereof, will. not enter thechute; and when said chute is swung into active position, it is inclinedwith the concaved side facing upward to receive the concrete as it dropsfrom the blades or wings approaching or reaching their highest points.Owing to the chute being inclined, the concrete will be delivered overthe outer or lower end thereof and drop onto the floor or ground, orinto a receptacle placed at such point to receive the same.

The construction of the dischargingmechanism herein shown and describedis that now thought to be best adapted for the purpose intended, but itis clearly apparent that changes in construction would readily suggestthemselves to one skilled in the art to which this invention appertains,without departing from the spirit or sacrificing any of the advantagesthereof, and I therefore do not wish to limit myself to such particularconstruction, since it is fully within the scope of my invention tomodify the same without changing its operation or functions.

Having thus described my invention, what I claim is,-

1. The combination with a rotatable mixing-drum having an opening at oneend, of a chute having its inner portion Within said drum and its outerport-ion extending out through said opening, said chute being pivotallysupported to swing laterally and arranged to cross the axis of said drumat all times, a handle on said chute for swinging the same, and aweighted counter-balance arm also secured to said chute and serving toretain it at the ends of its movements in opposite directions.

2. A drum-batch mixer with an opening in one of its heads, a dischargechute mounted to rotate independent of the drum on an axis substantiallyparallel with the axis of the.

said drum, said discharge chute having one of its terminals disposedwithin and the other disposed without the drum, and a flange on one sideof the outer terminal of the discharge chute, for conveying the materialin the chute back into the drum when the said chute is revolved intoinoperative position.

3. A drum batch mixer with an opening in one of its heads, a dischargechute mounted to rotate independent of the drum 'on an axissubstantially parallel with the axis of the said drum, the dischargechute being disposed at an angle to its axis, one of the terminals ofthe discharge chute being disposed within the drum and the otherwithout, and a cone shaped flange secured to one side of the dischargechute.

4. In a drum batch mixer, the combination with a drum head having adischarge aperture, of a discharge chute extending at its inner endwithin said aperture, inclined to the axial line of said head andmounted to rotate transversely of its length,independent of the drum,said chute being provided with a curved flange projecting from one sidewhereby when the chute is rotated into inoperative position the flangewill be disposed substantially in the position previously occupied bythe discharge chute and the material contained in the chute conveyedback into the drum.

In testimony whereof, I have aflixed my signature in the presence of twosubscribing witnesses.

CHESTER T. FOOTE.

Witnesses:

S. CLAYTON COOPER, W'IL IAM H. NoRTHwAY.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

